Condensed Consolidated Statements of Income (Unaudited) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Operating Revenues:
Total operating revenues	$ 5,339,000,000		$ 5,017,000,000		$ 14,450,000,000		$ 13,160,000,000
Other Income and (Expense):
Net Income (Loss) After Dividends on Preferred and Preference Stock of Subsidiaries	718,000,000	[1],[2]	852,000,000	[1],[2]	1,680,000,000	[1],[3]	1,230,000,000	[1],[3]
Southern Company [Member]
Operating Revenues:
Retail revenues	4,558,000,000		4,319,000,000		12,186,000,000		11,237,000,000
Wholesale revenues	600,000,000		520,000,000		1,719,000,000		1,406,000,000
Other electric revenues	169,000,000		166,000,000		503,000,000		477,000,000
Other revenues	12,000,000		12,000,000		42,000,000		40,000,000
Total operating revenues	5,339,000,000		5,017,000,000		14,450,000,000		13,160,000,000
Operating Expenses:
Fuel	1,656,000,000		1,580,000,000		4,765,000,000		4,216,000,000
Purchased power	194,000,000		145,000,000		514,000,000		367,000,000
Other operations and maintenance	1,021,000,000		928,000,000		3,026,000,000		2,849,000,000
Depreciation and amortization	514,000,000		480,000,000		1,515,000,000		1,422,000,000
Taxes other than income taxes	258,000,000		243,000,000		751,000,000		710,000,000
Estimated loss on Kemper IGCC	418,000,000		150,000,000		798,000,000		1,140,000,000
Total operating expenses	4,061,000,000		3,526,000,000		11,369,000,000		10,704,000,000
Operating Income (Loss)	1,278,000,000		1,491,000,000		3,081,000,000		2,456,000,000
Other Income and (Expense):
Allowance for equity funds used during construction	63,000,000		53,000,000		182,000,000		139,000,000
Interest expense, net of amounts capitalized	(207,000,000)		(202,000,000)		(623,000,000)		(628,000,000)
Other income (expense), net	(7,000,000)		(5,000,000)		(20,000,000)		(31,000,000)
Total other income and (expense)	(151,000,000)		(154,000,000)		(461,000,000)		(520,000,000)
Earnings (Loss) Before Income Taxes	1,127,000,000		1,337,000,000		2,620,000,000		1,936,000,000
Income taxes (benefit)	392,000,000		468,000,000		889,000,000		657,000,000
Net Income (Loss)	735,000,000		869,000,000		1,731,000,000		1,279,000,000
Less: Net income attributable to noncontrolling interest/Dividends on preferred and preference stock of subsidiaries	17,000,000		17,000,000		51,000,000		49,000,000
Net Income (Loss) After Dividends on Preferred and Preference Stock of Subsidiaries	718,000,000		852,000,000		1,680,000,000		1,230,000,000
Earnings per share (EPS) -
Basic EPS (in dollars per share)	$ 0.80		$ 0.97		$ 1.88		$ 1.41
Diluted EPS (in dollars per share)	$ 0.80		$ 0.97		$ 1.87		$ 1.40
Average number of shares of common stock outstanding (in millions)
Basic (in shares)	898		878		894		874
Diluted (in shares)	902		881		898		879
Cash dividends paid per share of common stock (in dollars per share)	$ 0.5250		$ 0.5075		$ 1.5575		$ 1.5050
Alabama Power [Member]
Operating Revenues:
Retail revenues	1,512,000,000		1,438,000,000		4,058,000,000		3,800,000,000
Wholesale revenues, non-affiliates	72,000,000		66,000,000		222,000,000		186,000,000
Wholesale revenues, affiliates	31,000,000		47,000,000		168,000,000		163,000,000
Other revenues	54,000,000		53,000,000		166,000,000		155,000,000
Total operating revenues	1,669,000,000		1,604,000,000		4,614,000,000		4,304,000,000
Operating Expenses:
Fuel	442,000,000		467,000,000		1,288,000,000		1,240,000,000
Purchased power, non-affiliates	57,000,000		36,000,000		153,000,000		84,000,000
Purchased power, affiliates	54,000,000		30,000,000		140,000,000		102,000,000
Other operations and maintenance	334,000,000		316,000,000		989,000,000		965,000,000
Depreciation and amortization	174,000,000		170,000,000		521,000,000		487,000,000
Taxes other than income taxes	88,000,000		85,000,000		265,000,000		262,000,000
Total operating expenses	1,149,000,000		1,104,000,000		3,356,000,000		3,140,000,000
Operating Income (Loss)	520,000,000		500,000,000		1,258,000,000		1,164,000,000
Other Income and (Expense):
Allowance for equity funds used during construction	15,000,000		7,000,000		36,000,000		23,000,000
Interest expense, net of amounts capitalized	(63,000,000)		(65,000,000)		(188,000,000)		(196,000,000)
Other income (expense), net	3,000,000		0		(5,000,000)		1,000,000
Total other income and (expense)	(45,000,000)		(58,000,000)		(157,000,000)		(172,000,000)
Earnings (Loss) Before Income Taxes	475,000,000		442,000,000		1,101,000,000		992,000,000
Income taxes (benefit)	183,000,000		174,000,000		429,000,000		390,000,000
Net Income (Loss)	292,000,000		268,000,000		672,000,000		602,000,000
Dividends on Preferred and Preference Stock	10,000,000		10,000,000		30,000,000		30,000,000
Net Income (Loss) After Dividends on Preferred and Preference Stock of Subsidiaries	282,000,000		258,000,000		642,000,000		572,000,000
Georgia Power [Member]
Operating Revenues:
Retail revenues	2,452,000,000		2,314,000,000		6,502,000,000		5,922,000,000
Wholesale revenues, non-affiliates	80,000,000		77,000,000		269,000,000		212,000,000
Wholesale revenues, affiliates	7,000,000		3,000,000		38,000,000		14,000,000
Other revenues	92,000,000		90,000,000		277,000,000		260,000,000
Total operating revenues	2,631,000,000		2,484,000,000		7,086,000,000		6,408,000,000
Operating Expenses:
Fuel	684,000,000		691,000,000		2,055,000,000		1,767,000,000
Purchased power, non-affiliates	77,000,000		64,000,000		219,000,000		175,000,000
Purchased power, affiliates	172,000,000		152,000,000		522,000,000		503,000,000
Other operations and maintenance	456,000,000		402,000,000		1,334,000,000		1,230,000,000
Depreciation and amortization	211,000,000		201,000,000		628,000,000		605,000,000
Taxes other than income taxes	111,000,000		102,000,000		320,000,000		292,000,000
Total operating expenses	1,711,000,000		1,612,000,000		5,078,000,000		4,572,000,000
Operating Income (Loss)	920,000,000		872,000,000		2,008,000,000		1,836,000,000
Other Income and (Expense):
Allowance for equity funds used during construction	13,000,000		11,000,000		29,000,000		24,000,000
Interest expense, net of amounts capitalized	(88,000,000)		(92,000,000)		(262,000,000)		(279,000,000)
Other income (expense), net	1,000,000		(1,000,000)		0		(2,000,000)
Total other income and (expense)	(74,000,000)		(82,000,000)		(233,000,000)		(257,000,000)
Earnings (Loss) Before Income Taxes	846,000,000		790,000,000		1,775,000,000		1,579,000,000
Income taxes (benefit)	317,000,000		299,000,000		660,000,000		600,000,000
Net Income (Loss)	529,000,000		491,000,000		1,115,000,000		979,000,000
Dividends on Preferred and Preference Stock	4,000,000		4,000,000		13,000,000		13,000,000
Net Income (Loss) After Dividends on Preferred and Preference Stock of Subsidiaries	525,000,000		487,000,000		1,102,000,000		966,000,000
Gulf Power [Member]
Operating Revenues:
Retail revenues	365,971,000		335,916,000		979,435,000		901,343,000
Wholesale revenues, non-affiliates	33,689,000		29,431,000		103,616,000		82,533,000
Wholesale revenues, affiliates	20,591,000		16,701,000		96,996,000		65,206,000
Other revenues	18,083,000		17,313,000		48,950,000		47,726,000
Total operating revenues	438,334,000		399,361,000		1,228,997,000		1,096,808,000
Operating Expenses:
Fuel	164,497,000		136,216,000		478,163,000		397,409,000
Purchased power, non-affiliates	26,813,000		17,180,000		56,605,000		41,369,000
Purchased power, affiliates	3,611,000		15,829,000		19,299,000		30,075,000
Other operations and maintenance	85,097,000		76,964,000		250,425,000		232,472,000
Depreciation and amortization	38,487,000		37,345,000		109,354,000		111,479,000
Taxes other than income taxes	31,229,000		28,051,000		83,786,000		75,437,000
Total operating expenses	349,734,000		311,585,000		997,632,000		888,241,000
Operating Income (Loss)	88,600,000		87,776,000		231,365,000		208,567,000
Other Income and (Expense):
Allowance for equity funds used during construction	3,195,000		1,663,000		8,276,000		4,318,000
Interest expense, net of amounts capitalized	(12,859,000)		(13,988,000)		(39,417,000)		(42,650,000)
Other income (expense), net	(627,000)		(337,000)		(1,857,000)		(2,704,000)
Total other income and (expense)	(10,291,000)		(12,662,000)		(32,998,000)		(41,036,000)
Earnings (Loss) Before Income Taxes	78,309,000		75,114,000		198,367,000		167,531,000
Income taxes (benefit)	29,511,000		28,109,000		74,228,000		62,950,000
Net Income (Loss)	48,798,000		47,005,000		124,139,000		104,581,000
Dividends on Preferred and Preference Stock	2,251,000		2,251,000		6,752,000		5,453,000
Net Income (Loss) After Dividends on Preferred and Preference Stock of Subsidiaries	46,547,000		44,754,000		117,387,000		99,128,000
Mississippi Power [Member]
Operating Revenues:
Retail revenues	228,331,000		230,710,000		646,695,000		613,274,000
Wholesale revenues, non-affiliates	82,952,000		82,937,000		254,642,000		219,984,000
Wholesale revenues, affiliates	38,639,000		6,999,000		81,593,000		31,242,000
Other revenues	4,701,000		4,560,000		13,829,000		13,075,000
Total operating revenues	354,623,000		325,206,000		996,759,000		877,575,000
Operating Expenses:
Fuel	168,708,000		138,148,000		458,976,000		384,905,000
Purchased power, non-affiliates	3,475,000		2,077,000		16,163,000		5,222,000
Purchased power, affiliates	1,966,000		14,691,000		16,630,000		28,302,000
Other operations and maintenance	65,758,000		56,907,000		191,923,000		166,175,000
Depreciation and amortization	23,382,000		22,202,000		70,318,000		67,644,000
Taxes other than income taxes	22,344,000		21,071,000		63,198,000		60,760,000
Estimated loss on Kemper IGCC	418,000,000		150,000,000		798,000,000		1,062,000,000
Total operating expenses	703,633,000		405,096,000		1,615,208,000		1,775,008,000
Operating Income (Loss)	(349,010,000)		(79,890,000)		(618,449,000)		(897,433,000)
Other Income and (Expense):
Allowance for equity funds used during construction	32,223,000		32,624,000		107,685,000		87,740,000
Interest expense, net of amounts capitalized	(9,416,000)		(8,728,000)		(34,071,000)		(29,526,000)
Other income (expense), net	(7,764,000)		(375,000)		(11,496,000)		(4,184,000)
Total other income and (expense)	15,043,000		23,521,000		62,118,000		54,030,000
Earnings (Loss) Before Income Taxes	(333,967,000)		(56,369,000)		(556,331,000)		(843,403,000)
Income taxes (benefit)	(139,330,000)		(32,687,000)		(253,007,000)		(355,156,000)
Net Income (Loss)	(194,637,000)		(23,682,000)		(303,324,000)		(488,247,000)
Dividends on Preferred and Preference Stock	433,000		433,000		1,299,000		1,299,000
Net Income (Loss) After Dividends on Preferred and Preference Stock of Subsidiaries	(195,070,000)		(24,115,000)		(304,623,000)		(489,546,000)
Southern Power [Member]
Operating Revenues:
Wholesale revenues, non-affiliates	331,878,000		265,752,000		870,093,000		705,828,000
Wholesale revenues, affiliates	102,631,000		96,795,000		242,527,000		263,624,000
Other revenues	747,000		2,220,000		2,293,000		5,517,000
Total operating revenues	435,256,000		364,767,000		1,114,913,000		974,969,000
Operating Expenses:
Fuel	178,281,000		133,464,000		420,896,000		363,466,000
Purchased power, non-affiliates	28,156,000		19,673,000		72,643,000		56,553,000
Purchased power, affiliates	12,796,000		7,011,000		58,475,000		21,158,000
Other operations and maintenance	46,347,000		41,309,000		168,392,000		154,920,000
Depreciation and amortization	59,508,000		41,094,000		162,524,000		126,152,000
Taxes other than income taxes	5,458,000		5,719,000		16,842,000		16,526,000
Total operating expenses	330,546,000		248,270,000		899,772,000		738,775,000
Operating Income (Loss)	104,710,000		116,497,000		215,141,000		236,194,000
Other Income and (Expense):
Interest expense, net of amounts capitalized	(22,983,000)		(12,961,000)		(66,952,000)		(53,923,000)
Other income (expense), net	5,511,000		(791,000)		5,596,000		(2,739,000)
Total other income and (expense)	(17,472,000)		(13,752,000)		(61,356,000)		(56,662,000)
Earnings (Loss) Before Income Taxes	87,238,000		102,745,000		153,785,000		179,532,000
Income taxes (benefit)	21,960,000		17,592,000		22,177,000		37,265,000
Net Income (Loss)	65,278,000		85,153,000		131,608,000		142,267,000
Less: Net income attributable to noncontrolling interest/Dividends on preferred and preference stock of subsidiaries	1,647,000		0		3,694,000		0
Net income attributable to Southern Power Company	$ 63,631,000		$ 85,153,000		$ 127,914,000		$ 142,267,000

[1] After dividends on preferred and preference stock of subsidiaries.

[2] Segment net income (loss) for the traditional operating companies for the three months ended September 30, 2014 and September 30, 2013 includes a $418.0 million pre-tax charge ($258.1 million after tax) and a $150.0 million pre-tax charge ($92.6 million after tax), respectively, for estimated probable losses on the Kemper IGCC. See Note (B) under "Integrated Coal Gasification Combined Cycle – Kemper IGCC Schedule and Cost Estimate" herein for additional information.

[3] Segment net income (loss) for the traditional operating companies for the nine months ended September 30, 2014 and September 30, 2013 includes $798.0 million in pre-tax charges ($492.8 million after tax) and $1.14 billion in pre-tax charges ($704.0 million after tax), respectively, for estimated probable losses on the Kemper IGCC. See Note (B) under "Integrated Coal Gasification Combined Cycle – Kemper IGCC Schedule and Cost Estimate" herein for additional information.